CC Ādi 4.63— “O Lord, You are the support of everything. The three attributes hlādinī, sandhinī and samvit exist in You as one spiritual energy. But the material modes, which cause happiness, misery and mixtures of the two, do not exist in You, for You have no material qualities.”
CC Ādi 4.64— The essential portion of the sandhinī potency is śuddha-sattva. Lord Kṛṣṇa’s existence rests upon it.
CC Ādi 4.65— Kṛṣṇa’s mother, father, abode, house, bedding, seats and so on are all transformations of śuddha-sattva.
CC Ādi 4.66— “The condition of pure goodness [śuddha-sattva], in which the Supreme Personality of Godhead is revealed without any covering, is called vasudeva. In that pure state the Supreme Godhead, who is beyond the material senses and who is known as Vāsudeva, is perceived by my mind.”